公开(公告)号：US20060221905A1

公开(公告)日：2006-10-05

申请号：US11168733

申请日：2005-06-28

申请人： Arya Behzad ,  Jason Trachewsky ,  R. Moorti

发明人： Arya Behzad ,  Jason Trachewsky ,  R. Moorti

IPC分类号： H04B7/216

CPC分类号： H04B1/40

摘要： A multiple input multiple output (MIMO) RF transceiver system includes a plurality of RF transceiver ICs, a crystal, and master oscillation coupling. Each of the plurality of RF transceiver ICs includes crystal oscillator circuitry. Crystal oscillator circuitry of the first RF transceiver IC and a crystal are operable to produce a master oscillation. Master oscillation coupling couples the master oscillation produced by the first RF transceiver IC to the at least one other RF transceiver IC. In one embodiment, the master oscillation is passed from the first RF transceiver IC to each other transceiver RF ICs. In another embodiment, the master oscillation is used to produce a slave oscillation at a second RF transceiver IC and subsequent RF transceiver ICs produce there own slave oscillation based upon a slave oscillation received from a prior RF transceiver IC.

摘要翻译： 多输入多输出（MIMO）RF收发器系统包括多个RF收发器IC，晶体和主振荡耦合。 多个RF收发器IC中的每一个包括晶体振荡器电路。 第一RF收发器IC和晶体的晶体振荡器电路可操作以产生主振荡。 主振荡耦合将由第一RF收发器IC产生的主振荡耦合到至少一个其它RF收发器IC。 在一个实施例中，主振荡从第一RF收发器IC传递到彼此的收发器RF IC。 在另一个实施例中，主振荡用于在第二RF收发器IC产生从动振荡，并且随后的RF收发器IC基于从先前RF收发器IC接收的从动振荡而产生自身的从动振荡。

公开(公告)号：US20060094395A1

公开(公告)日：2006-05-04

申请号：US11303235

申请日：2005-12-16

申请人： C. Lee ,  Arya Behzad

发明人： C. Lee ,  Arya Behzad

IPC分类号： H04B1/28 ,  H04B1/18 ,  H04B1/10

CPC分类号： H04B1/30

摘要： An scheme to provide local oscillator feedthrough offset cancellation to remove baseband and radio frequency coupled offsets. Two separate offset cancellation currents are injected at a driver which drives a baseband signal into a mixer to mix with a local oscillator signal. One offset cancellation current cancels a baseband local oscillator feedthrough offset, while the other offset cancellation current cancels a radio frequency local oscillator feedthrough offset.

摘要翻译： 提供本地振荡器馈通偏移消除以去除基带和射频耦合偏移的方案。 在驱动基带信号的驱动器中注入两个单独的偏移消除电流到混频器以与本地振荡器信号混频。 一个偏移消除电流消除基带本地振荡器馈通偏移，而另一个偏移消除电流消除射频本地振荡器馈通偏移。

公开(公告)号：US20060057990A1

公开(公告)日：2006-03-16

申请号：US11167358

申请日：2005-06-27

申请人： Arya Behzad ,  C. Lee

发明人： Arya Behzad ,  C. Lee

IPC分类号： H04B7/00 ,  H04B1/06

CPC分类号： H03F3/45188 ,  H03F1/3211 ,  H03F3/19 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45338 ,  H03F2203/45512 ,  H03F2203/45526 ,  H03F2203/45638

摘要： A RF differential gain stage has cross-coupled capacitors between input and output nodes of the amplifier stage to boost gain. The gain boost allows cancellation of the series resistance of an inductive load of the amplifier stage.

摘要翻译： RF差分增益级在放大器级的输入和输出节点之间具有交叉耦合电容，以增强增益。 增益增益允许消除放大器级的感性负载的串联电阻。

公开(公告)号：US20060028280A1

公开(公告)日：2006-02-09

申请号：US11247852

申请日：2005-10-11

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H03F1/22

CPC分类号： H03F1/3205 ,  H03F1/0261 ,  H03F1/22 ,  H03F2200/372

摘要： A power amplifier includes a transconductance stage and a modulation detection and bias determination module, and may include a cascode stage. The modulation detection and bias determination module operably couples to the transconductance stage and to the cascode stage when present and is operable to detect modulation characteristics of an signal operated upon by the transconductance stage. The modulation detection and bias determination module is also operable to controllably bias the transconductance stage and/or the cascode stage when present based upon detected modulation characteristics. The detected modulation characteristics are typically determined based upon a measured signal level, e.g., voltage level, current level, or power level, of the signal operated upon by the transconductance device. For non-constant envelope modulations, the signal level varies over time with the modulation envelope. The operational characteristics of the power amplifier, e.g., biasing condition(s), are therefore varied over time with the variation of the modulation.

摘要翻译： 功率放大器包括跨导级和调制检测和偏置确定模块，并且可以包括级联级。 调制检测和偏置确定模块在存在时可操作地耦合到跨导级和共源共栅级，并且可操作以检测由跨导级操作的信号的调制特性。 调制检测和偏置确定模块还可操作以基于检测到的调制特性来可控地偏置跨导级和/或共存共栅级。 检测的调制特性通常基于由跨导装置操作的信号的测量信号电平，例如电压电平，电流电平或功率电平来确定。 对于非恒定包络调制，信号电平随时间随调制包络而变化。 因此，功率放大器的操作特性，例如偏置条件，随着时间的推移随着调制的变化而变化。

公开(公告)号：US20050168261A1

公开(公告)日：2005-08-04

申请号：US11087662

申请日：2005-03-24

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H03G1/00 ,  H03G3/00 ,  H03G3/30 ,  H03G3/12

CPC分类号： H03G1/0088 ,  H03G3/001 ,  H03G3/3036

摘要： An apparatus for providing a programmable gain attenuator (PGA) while minimizing the influence of semiconductor switches on the signal being attenuated. An example apparatus comprises a impedance ladder with taps forming the junctions between impedances the PGA is then programmed by grounding the taps through terminating resistors.

公开(公告)号：US20050101280A1

公开(公告)日：2005-05-12

申请号：US11021631

申请日：2004-12-22

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H03D7/14 ,  H03B19/00 ,  H04B1/18 ,  H04B1/26

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D2200/0025 ,  H03D2200/0084

摘要： A mixer includes a reference current source, a programmable gain RF transconductance section or an RF transconductance section, switching quad native transistors or switching quad transistors, and a folded-cascoded common mode output section or an output section. When the mixer included the programmable gain RF transconductance section, the gain of the mixer is adjustable. When the mixer includes the switching quad native transistors, flicker noise of the mixer is reduced. When the mixer includes the folded-cascoded common mode output section, the mixer operates reliably from low supply voltages.

摘要翻译： 混频器包括参考电流源，可编程增益RF跨导部分或RF跨导部分，开关四原子晶体管或开关四极管，以及折叠共源共模输出部分或输出部分。 当混频器包括可编程增益RF跨导部分时，混频器的增益可调。 当混合器包括开关四态天生晶体管时，混频器的闪烁噪声减小。 当混频器包括折叠共源共模输出部分时，混频器从低电源电压可靠地运行。

公开(公告)号：US08670733B2

公开(公告)日：2014-03-11

申请号：US13355739

申请日：2012-01-23

申请人： Arya Behzad ,  Ahmadreza Rofougaran

发明人： Arya Behzad ,  Ahmadreza Rofougaran

IPC分类号： H04B17/02 ,  H04B7/08 ,  H03D5/00 ,  H04B1/16 ,  H04M1/00

CPC分类号： H04B1/0067 ,  H04B1/005 ,  H04B1/406

摘要： A multimode communication device with a shared signal path programmable filter and a method for utilizing a shared signal path programmable filter in a multimode communication device. Various aspects of the present invention comprise a first module adapted to receive a first communication signal (e.g., corresponding to a first communication protocol) and a second module adapted to receive a second communication signal (e.g., corresponding to a second communication protocol). A shared filter, communicatively coupled to the first and second modules, may be adapted to filter the first and/or second communication signals in accordance with a plurality of selectable sets of filter response characteristics (e.g., associated with the first and second communication protocols). A filter control module may be adapted to select a set of filter response characteristics from a plurality of such sets and program the shared filter to filter a communication signal in accordance with the selected set.

摘要翻译： 一种具有共享信号路径可编程滤波器的多模通信装置和在多模通信装置中利用共享信号路径可编程滤波器的方法。 本发明的各个方面包括适于接收第一通信信号（例如，对应于第一通信协议）的第一模块和适于接收第二通信信号（例如，对应于第二通信协议）的第二模块。 通信地耦合到第一和第二模块的共享滤波器可以适于根据多个可选择的滤波器响应特性集（例如，与第一和第二通信协议相关联）来过滤第一和/或第二通信信号， 。 滤波器控制模块可以适于从多个这样的集合中选择一组滤波器响应特性，并且对共享滤波器进行编程以根据所选择的集合来过滤通信信号。

公开(公告)号：US08600300B2

公开(公告)日：2013-12-03

申请号：US11618869

申请日：2006-12-31

申请人： Chungyeol Paul Lee ,  Bojko Marholev ,  Arya Behzad ,  Mark Gonikberg ,  Brima Babatunde Ibrahim ,  Thomas Varghese

发明人： Chungyeol Paul Lee ,  Bojko Marholev ,  Arya Behzad ,  Mark Gonikberg ,  Brima Babatunde Ibrahim ,  Thomas Varghese

IPC分类号： H04B5/00

CPC分类号： H04B1/406 ,  H04W88/00

摘要： Aspects of a method and system for single chip WLAN and Bluetooth radios on a single CMOS substrate are presented. Aspects of the system may include a WLAN receiver circuit within a substrate of a single chip that enables reception of WLAN signals, and a Bluetooth receiver circuit within the same substrate that enables reception of Bluetooth signals. The WLAN receiver circuit and Bluetooth receiver circuit may utilize a single low noise amplifier circuit that enables reception of the WLAN signals and Bluetooth signals. Aspects of the system may also include a WLAN transmitter circuit within a substrate of a single chip that enables transmission of WLAN signals, and a Bluetooth transmitter circuit within the same substrate that enables transmission of Bluetooth signals. The WLAN transmitter circuit and Bluetooth transmitter circuit may utilize a single power amplifier circuit that enables transmission of the WLAN signals and Bluetooth signals.

摘要翻译： 提出了单个CMOS基板上的单芯片WLAN和蓝牙无线电的方法和系统的方面。 该系统的方面可以包括能够接收WLAN信号的单个芯片的基板内的WLAN接收器电路，以及能够接收蓝牙信号的同一基板内的蓝牙接收器电路。 WLAN接收器电路和蓝牙接收器电路可以使用能够接收WLAN信号和蓝牙信号的单个低噪声放大器电路。 该系统的方面还可以包括能够传输WLAN信号的单个芯片的基板内的WLAN发射机电路，以及能够传输蓝牙信号的同一基板内的蓝牙发射机电路。 WLAN发射机电路和蓝牙发射机电路可以利用能够传输WLAN信号和蓝牙信号的单个功率放大器电路。

公开(公告)号：US08532577B2

公开(公告)日：2013-09-10

申请号：US13484474

申请日：2012-05-31

申请人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

发明人： Arya Behzad ,  Ali Afsahi ,  Vikram Magoon ,  Mark Gonikberg ,  George Varghese ,  Guruprasad Revanna

IPC分类号： H04B1/00

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/451 ,  H04L27/368

摘要： Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration are presented. Aspects of the system may include an RF transmitter that enables generation of an RF output signal in response to one or more generated input signals. One or more feedback signals may be generated by performing frequency downconversion on the RF output signal within a corresponding one or more feedback mixer circuits. The generated one or more feedback signals may be inserted at a corresponding one or more insertion points in an RF receiver. Each insertion point may be between a receiver mixer circuit and corresponding circuits that generate a baseband signal based on the corresponding one of the feedback signals.

摘要翻译： 提出了通过利用具有正交反馈混频器配置的数字预失真方案来补偿发射机中的估计失真的方法和系统的方面。 系统的方面可以包括RF发射器，其能够响应于一个或多个所生成的输入信号而产生RF输出信号。 可以通过对相应的一个或多个反馈混频器电路中的RF输出信号执行频率下变频来产生一个或多个反馈信号。 所生成的一个或多个反馈信号可以插入RF接收器中相应的一个或多个插入点。 每个插入点可以在接收机混合器电路和基于相应的一个反馈信号产生基带信号的相应电路之间。

公开(公告)号：US08374560B2

公开(公告)日：2013-02-12

申请号：US12882684

申请日：2010-09-15

申请人： Arya Behzad ,  Adedayo Ojo ,  Yuyu Chang ,  Hung-Ming Chien ,  Kishore Rama Rao ,  Guruprasad Seetharam

发明人： Arya Behzad ,  Adedayo Ojo ,  Yuyu Chang ,  Hung-Ming Chien ,  Kishore Rama Rao ,  Guruprasad Seetharam

IPC分类号： H04B1/04

CPC分类号： H04B1/06 ,  H04B1/0057 ,  H04B1/0082 ,  H04B7/084

摘要： Aspects of a method and system for processing signals in a high performance receive chain may include amplifying a plurality of radio frequency signals in one or more respective one or ones of a plurality of amplifier chains in a multistandard radio frequency front-end, which may comprise one or more shared processing stages. The plurality of radio frequency signals may be compliant with a plurality of radio frequency communication standards and may be received concurrently. The one or more shared processing stages may be shared between two or more of the plurality of amplifier chains. Each of the two or more of the plurality of amplifier chains may be operable to amplify signals compliant with different radio frequency communication standards.

摘要翻译： 用于处理高性能接收链中的信号的方法和系统的方面可以包括在多标准射频前端中的多个放大器链中的一个或多个相应的一个或多个放大器链中放大多个射频信号，其可以包括 一个或多个共享处理阶段。 多个射频信号可以符合多个射频通信标准，并且可以同时接收。 一个或多个共享处理级可以在多个放大器链中的两个或更多个之间共享。 多个放大器链中的两个或更多个放大器链中的每一个可以可操作以放大符合不同射频通信标准的信号。